iOS: Holding your iPhone or iPad steady while making a video call isn't always easy, especially if you're on the move. The updated Skype iPhone and iPad apps have a cool new anti-shake feature that actually works, as the video shows.

Android: Skype has been available on Android for a while, but only for voice calling—despite many phones having front-facing cameras. Today, it has been updated to support video chat on over 21 different Android phones.